Optimal Hysteresis Loop Shapes for Permanent Magnets and Transformer Cores

Click For Summary
SUMMARY

The discussion focuses on the optimal hysteresis loop shapes required for magnetic materials used in permanent magnets and transformer cores. For permanent magnets, a loop with a high coercivity and remanence is essential, ensuring that the magnetic field remains stable without returning to zero when the applied magnetic field (H) is removed. In contrast, transformer cores require a loop that minimizes energy loss, characterized by a smaller area under the B-H curve, allowing for efficient magnetic flux without significant hysteresis losses.

PREREQUISITES
  • Understanding of B-H hysteresis loops
  • Knowledge of magnetic properties such as coercivity and remanence
  • Familiarity with energy loss in magnetic materials
  • Basic principles of electromagnetism and magnetic circuits
NEXT STEPS
  • Research the properties of permanent magnets and their hysteresis loops
  • Explore transformer core materials and their efficiency metrics
  • Study the impact of hysteresis loss on transformer performance
  • Learn about advanced magnetic materials and their applications in electronics
USEFUL FOR

Students in physics or electrical engineering, materials scientists, and professionals involved in the design of magnetic components for electronics and power systems.

KingBigness
Messages
94
Reaction score
0

Homework Statement


What hysteresis loop shape would you require for a magnetic material to be used in

A) a permanent magnet
B) transformer core

The Attempt at a Solution



No idea what this means...but it is for my lab tomorrow so I probably should.

Any help would be greatly appreciated,
 
Physics news on Phys.org
Think of a B-H hysteresis loop and how B does not return to zero when H does (remebering that H is prportional to applied current). Would that work to make a permanent magnet?

Then recall that the area under the B-H curve represents energy lost. Would that be a good material for a transformer core?

cf. wikipedia/wiki/magnetic_core.com
 

Similar threads

Replies
5
Views
6K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
13
Views
2K
Replies
16
Views
3K
Replies
4
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
3
Views
4K
  • · Replies 13 ·
Replies
13
Views
3K